Research output: Contribution to Journal/Magazine › Journal article › peer-review
<mark>Journal publication date</mark> | 1/09/1997 |
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<mark>Journal</mark> | Applied Physics Letters |
Issue number | 9 |
Volume | 71 |
Number of pages | 3 |
Pages (from-to) | 1177-1179 |
Publication Status | Published |
<mark>Original language</mark> | English |
A physical effect of ultrasound induced lubricity is reported. We studied the dynamic friction dependence on out-of-plane ultrasonic vibration of a sample using friction force microscopy and a scanning probe technique, the ultrasonic force microscope, which can probe the dynamics of the tip-sample elastic contact at a submicrosecond scale. The results show that friction vanishes when the tip-surface contact breaks for part of the out-of-plane vibration cycle. Moreover, the friction force reduces well before such a break, and this reduction does not depend on the normal load. This suggests the presence on the surface of a layer with viscoelastic behavior. (C) 1997 American Institute of Physics.